13903488 has 112 divisors (see below), whose sum is σ = 41807250. Its totient is φ = 4603392.

The previous prime is 13903481. The next prime is 13903517. The reversal of 13903488 is 88430931.

It can be written as a sum of positive squares in only one way, i.e., 13483584 + 419904 = 3672^2 + 648^2 .

It is a super-2 number, since 2×13903488² = 386613957132288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13903481) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 93238 + ... + 93386.

Almost surely, 2^13903488 is an apocalyptic number.

13903488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13903488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20903625).

13903488 is an abundant number, since it is smaller than the sum of its proper divisors (27903762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13903488 is an frugal number, since it uses more digits than its factorization.

13903488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 13903488 is about 3728.7381243525. The cubic root of 13903488 is about 240.4591211390.

The spelling of 13903488 in words is "thirteen million, nine hundred three thousand, four hundred eighty-eight".